Research on 3D Visualization Modeling of Bridge Real Scene Based on OpenGL Graphics Library and Image Sequence

In order to more accurately analyze the actual state of the bridge, building an accurate model is one of the effective technical means. For this reason, this paper puts forward the research on three-dimensional visual modeling of bridge reality based on OpenGL graphics library and image sequence. After defining the relationship between the bridge images taken continuously by using the homography matrix, the bridge image sequences are sorted; The Marching Cubes algorithm in OpenGL is used to reconstruct the Poisson surface, determine the smooth 3D mesh of the bridge model, render it, and output the 3D visualization model of the real bridge. In the test results, the output model can accurately feedback the actual situation of each component of the bridge.